Antenna



FIG. 1 is a front perspective view of an antenna according to an embodiment of the invention;

FIG. 2 is a top plan view of the antenna of FIG. 1;

FIG. 3 is a bottom plan view of the antenna of FIG. 1;

FIG. 4 is a left-side elevation view of the antenna of FIG. 1;

FIG. 5 is a right-side elevation view of the antenna of FIG. 1;

FIG. 6 is a front elevation view of the antenna of FIG. 1; and,

FIG. 7 is a rear elevation view of the antenna of FIG. 1.

The broken lines and the areas within broken lines in the figures depict portions of the antenna that form no part of the claimed design. 

I claim the ornamental design for an antenna, as shown. 